Реши уравнение log(x−4)9−2=0

Question

Алгебра: Реши уравнение log(x−4)9−2=0

deadraccoon20 · Accepted Answer

( x + 2xy ) * ( 2x - 1 )

x-y x^2-2xy+y^2 x+y

(x^3-2x^2y+y^2x+2x^2y-2xy^2)* ( 2x - 1 )

(x-y) (x^2-2xy+y^2 ) x+y

(x^3-2x^2y+y^2x+2x^2y-2xy^2) *(2x - 1 )

(x-y) (x^2-2xy+y^2 )( x+y)

(x^3-xy^2) *(2x - 1 )

(x-y) (x^2-2xy+y^2 )( x+y)

x(x^2-y^2)*(2x - 1 )

(x-y) (x^2-2xy+y^2 )( x+y)

x((x-y)(x+y)))*(2x - 1 )

(x-y) (x^2-2xy+y^2 )( x+y)

x*(2x - 1 )

(x^2-2xy+y^2 )

x*(2x - 1 )

(x-y)^2

подставляем

-2(-4-1) = 10

9 9